:root{--ink:#263238;--muted:#62717b;--line:#d7e0e5;--paper:#fffdf7;--surface:#fff;--mint:#3b9b8f;--leaf:#6c9a43;--sun:#e5ad3d;--coral:#d76f5e;--shadow:0 16px 45px #2d3a461f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);letter-spacing:0;margin:0;font-family:Arial,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif}a{color:inherit}img{max-width:100%;display:block}.siteHeader{z-index:10;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffdf7f0;justify-content:space-between;align-items:center;gap:24px;padding:14px clamp(18px,4vw,56px);display:flex;position:sticky;top:0}.brand{white-space:nowrap;align-items:center;gap:10px;font-weight:800;text-decoration:none;display:inline-flex}.brandMark{background:var(--mint);color:#fff;border-radius:8px;place-items:center;width:34px;height:34px;display:grid}.nav{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;gap:8px 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